The UT3 POM material has been updated. After some time I realized that there was an error in the first depth search, leading to wrong data on the first layer. I also changed some additional stuff like specular parameters.
Updated post: http://oliverm-h.blogspot.com/2011/10/ut3-parallax-occlusion-mapping-material.html
New download link: http://www.mediafire.com/?xq1s9dbe55s2xf2